package com.main.heath.servcie.util;

/**
 * Created by heathhose on 16-11-15.
 */

import com.main.heath.servcie.SavePingRCService;
import com.main.heath.servcie.impl.SavePingRCServiceImpl;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.sql.Connection;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import static java.lang.Thread.sleep;

public  class PingUtil implements Runnable{
    private String ipAddress;
    private     boolean flag = false;
    private     Process pro;
    Connection connection;
    String[] packegLossNum;

    public     boolean ping(String ip) throws Exception {
        int  timeOut =  3000 ;  //超时应该在3钞以上
        boolean status = InetAddress.getByName(ip).isReachable(timeOut);     // 当返回值是true时，说明host是可用的，false则不可。
        return status;
    }

    public     void ping02() throws Exception {
        String line = null;
        try {
            pro = Runtime.getRuntime().exec("ping -c1 -w1 " + ipAddress);
            BufferedReader buf = new BufferedReader(new InputStreamReader(
                    pro.getInputStream()));
            while ((line = buf.readLine()) != null){
                if(line.length() < 1){
                    continue;
                }
                if(line.charAt(0) == 'F'|| line.charAt(0) == 'c')
                    SavePingRCServiceImpl.saveOffPing(connection,line,false);
                if(line.charAt(3) == 'b'){
                    SavePingRCServiceImpl.savePing(connection,line,true);
                }
                if(line.charAt(2) == 'p'){
                    packegLossNum = line.split(" ");

                    if( packegLossNum[5].equals("100%") ){
                       SavePingRCServiceImpl.setPacketLoss(connection,ipAddress,packegLossNum[5]);
                    }
                }
                System.out.println(line);
            }
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
    }

    public     boolean ping(String ipAddress, int pingTimes, int timeOut) {
        BufferedReader in = null;
        Runtime r = Runtime.getRuntime();  // 将要执行的ping命令,此命令是windows格式的命令
        String pingCommand = "ping " + ipAddress + " -n " + pingTimes    + " -w " + timeOut;
        try {   // 执行命令并获取输出
            System.out.println(pingCommand);
            Process p = r.exec(pingCommand);
            if (p == null) {
                return false;
            }
            in = new BufferedReader(new InputStreamReader(p.getInputStream()));   // 逐行检查输出,计算类似出现=23ms TTL=62字样的次数
            int connectedCount = 0;
            String line = null;
            while ((line = in.readLine()) != null) {
                connectedCount += getCheckResult(line);
            }   // 如果出现类似=23ms TTL=62这样的字样,出现的次数=测试次数则返回真
            return connectedCount == pingTimes;
        } catch (Exception ex) {
            ex.printStackTrace();   // 出现异常则返回假
            return false;
        } finally {
            try {
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    //若line含有=18ms TTL=16字样,说明已经ping通,返回1,否則返回0.
    private     int getCheckResult(String line) {  // System.out.println("控制台输出的结果为:"+line);
        Pattern pattern = Pattern.compile("(\\d+ms)(\\s+)(TTL=\\d+)",    Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(line);
        while (matcher.find()) {
            return 1;
        }
        return 0;
    }
    public     void startPing() throws Exception {
//        ipAddress = "123.125.114.144";
//        ipAddress = "10.0.45.34";
        ping02();

    }

    public     void endPing(){
        pro.destroy();
    }

    public void run(){
        connection = SavePingRCServiceImpl.getConnection();
        while(flag){
            try {
                startPing();
                //等待丢包
                sleep(500);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    }

    public void setIpAddress(String ipAddress) {
        this.ipAddress = ipAddress;
    }
    public String getIpAddress(){
        return ipAddress;
    }

    public void setFlag(boolean b) {
        this.flag = b;
    }
}